When the sound level is significantly increased during television commercials.
You're sitting on the couch straining to hear the dialog of your favorite TV program when
a commercial comes
on. The next thing you know the sheer volume of the ad has blasted you so far back
into the couch you're finding coins
and change that disappeared from
your pockets when
black & white TV was still in vogue. Congratulations; you've just been audio jacked!